Dcr swm pgm rollout regional meetings 1


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Dcr swm pgm rollout regional meetings 1

  1. 1. Stormwater Management Regulation Roll Out Regional Outreach Meeting Front Royal, VA August 6, 2012 1
  2. 2. Presenters & Agenda• Introductions – Ginny Snead, PE; Office of Regulatory Programs Manager• Stormwater Regulatory Overview &Update - Ginny Snead, PE• Local SWM Program Elements & Tools – Joan Salvati, Guidance and Program Development Manager• Virginia E-Permitting - Gerry Seeley, DCR Website Development Coordinator 2
  3. 3. Commonwealth of VirginiaStormwater Regulatory Update Ginny Snead, PE Office of Regulatory Programs Manager July 17, 2012 3
  4. 4. Office of Regulatory Programs Regulation Applicability threshold• Erosion & Sediment Control Act 10,000 sq ft• Chesapeake Bay Preservation Act 2,500 sq ft• VA SW Management Permit (VSMP) 1 acre – Construction General Permit• Municipal Separate Storm Sewer System (MS4) – Phase I Individual Permits – Phase II (Small) General Permit• Chesapeake Bay Total Maximum Daily Load (TMDL) Watershed Implementation Plan (WIP) 4
  5. 5. Virginia Stormwater Management Program (VSMP)• Currently State Run• Compliance = Water Quality – Current Compliance @ 40% – Local vs. State confusion• Simplification: Local Programs = Local Control = Improved Compliance• Consistency: Facilitates uniform program oversight and enforcement. 5
  6. 6. VSMP Regulations Timeline• Virginia Soil and Water Conservation Board adopted regulations May 24, 2011• Regulations became effective September 13, 2011 and Published on DCR website• Implementation date = July 1, 2014 through State Construction General Permit and Local Ordinances• Before July 1, 2014, Local Gov’ts Develop and Adopt Ordinances and Programs 6
  7. 7. Statewide ImplementationChesapeake Bay Preservation Act localities and Municipal SeparateStorm Sewer System (MS4) permitted localitiesLikely that no stormwater program exists currently (but do have E&S) 7
  8. 8. Program Development Timeline• Regulations effective September 13, 2011• Local program development timeframe January through June 2013 (15 - 21 months of effective date of regulations) – One year extension to July 1, 2014 – Compliance = Water Quality Protection• Local Program Development NOW – Outreach, Outreach, Outreach – Tool Development – Stormwater Local Government Advisory Committee 8 (SLGAC)
  9. 9. Local Program Benefits• Developers – Eliminates local vs. state confusion – More effective options – Greater compliance=better protection of local natural resources• Local Control – Speed of plan review and approval – Economic development advantage – Address local issues 9
  10. 10. DCR Assistance Timeline• Establish Local Government Advisory Team – Began March 2012• Program Requirement Checklist – Final May 2012• Model Ordinance development – underway (end of summer)• Training Plan• Administrative Tools 10
  11. 11. Relevant 2012 Legislation• Budget (local financial assistance)• Integration Bill (HB1065, SB407) – Statewide Reach and Streamlines Programs• Nutrient Trading Bill (HB176, SB77) – Expansion of Current Programs • CAFOs, MS4s, Industrial SW – Cost Effective Compliance – Stormwater Offsets• Necessitates several exempt regulatory actions 11
  12. 12. General Permit Reissuance• Small MS4 General Permit – RAP Meetings June, July, August – Proposed Regs to Board this September (2012) – Effective July 2013• Construction General Permit – May 21 - June 20 Initial Public Comment – RAP Meetings August, September, October – Proposed Regs to Board December 2012 – Effective July 2014 12
  13. 13. Question and Answer 13
  14. 14. Introducing Runoff Volume Reduction• The Virginia Runoff Reduction Method (RRM) was developed by the Center for Watershed Protection (CWP) and the Chesapeake Stormwater Network (CSN) for DCR.• The method focuses on determining a BMPs capacity to capture/reduce the overall volume of runoff as well as mass pollutant removal. Goal = mimic pre- development site hydrology.• The method also incorporates built-in incentives for forest preservation and the minimization of impervious surfaces.• The RRM is a tool for planning and measuring compliance. It is not a design tool. 14
  15. 15. • “Traditional” BMP pollutant removal efficiencies do not take into account the removal that occurs when the runoff volume is reduced.• Many BMPs, such as ponds and filters, do not reduce 15 runoff volume at all.
  16. 16. • Using BMPs that also provide volume reduction provides greater overall pollutant (mass load) removal• This reflects a “Mass Balance” Approach 16
  17. 17. The Key Differences in Application Existing Rules Modified Rules Impervious Surface Land Use(s) IC + Forest/Open Space (IC) only + Managed Turf 0.5 inches of Runoff Event 1.0 inches of Rainfall from the IC only from the whole siteAverage land condition/ 0.41 lbs./ac/yr TP New Design Criteria technology based 10% reduction TP Redevelopment <1 acre = 10% red. TP, Criteria >1 acre = 20% red. TP Compliance Runoff Reduction Method Simple Method Methodology (RRM = enhanced Simple Method) 17
  18. 18. 0.41 lbs/ac/yr Total Phosphorus Threshold associated with the Impervious Cover ModelStatewide requirement based on three types of land cover and NRCS hydrologicsoil groups of soil on siteThreshold assumes 10% impervious cover, 30% turf, 60% forestThe Impervious Cover Model focuses on protecting water qualityin local streams. 18
  19. 19. Use Environmental Site Design (Think about this early in the design process)• Fit the design to terrain• Locate development in less sensitive areas• Reduce the limits of clearing and grading• Use open space design (clustering) techniques• Reduce impervious cover If designers wait until site plans are completed and then apply SWM solutions afterwards, SWM solutions are likely to be more constrained, less effective, and more costly. 19
  20. 20. Typical Development Site Plan 15 Acres 25 0.6 acre lots Treatment Volume = 18,100 cubic feet 20
  21. 21. Example Runoff Reduction Site Plan 15 Acres 25 ¼ acre lots Treatment Volume = 13,600 cubic feet 25% reduction before BMPs applied 21
  22. 22. Water Quantity ControlThe new paradigm is Volume-Based Hydrology (VBH), focused on: Volume Peak Flow Velocity Flooding 22
  23. 23. Channel Protection Criteria are nowSituationalManmade Stormwater Conveyance Systems Restored Stormwater Conveyance SystemsNatural Stormwater Conveyance Systems 23
  24. 24. The Energy Balance Method• The new ENERGY BALANCE METHOD is based on the interaction of both flow volume and peak discharge, which determine the stream channel configuration 24
  25. 25. Runoff Reduction Method Spreadsheet Compliance tool, NOT a design tool: • Calculates treat. volume & pollutant reduction requirement • Tracks & totals BMP pollutant removals • CN adjustments for quantity control 25
  26. 26. Grandfathered Projects (4 VAC 50-60-48)Land-disturbing activities where the following was approvedby a locality prior to July 1, 2012:– a currently valid proffered or conditional zoning plan,–preliminary or final subdivision plat,–preliminary or final site plan or–zoning with a plan of development,–or any document determined by the locality as being equivalent and–Coverage under the Virginia Stormwater Management Program(VSMP) General Permit was not obtained prior to July 1, 2014. The land disturbance activity must be complete by June 30, 2019 or portions not under construction shall become subject to the new regulatory design criteria. 26
  27. 27. Grandfathered Local, State and Federal ProjectsA local, state or federal project is grandfathered until June30, 2019 when: There has been an obligation of locality, state, or federal funding, in whole or in part, prior to July 1, 2012, or for which the department has approved a stormwater management plan prior to July 1, 2012 Additional discussion is required on what this means for state college and university master plans.If bonds or public debt financing has been secured prior toJuly, 1 2012, projects shall be grandfathered 27
  28. 28. Time Limit on Applicability of Approvals (4 VAC 50-60-47.1)The approved post-development SWM design is valid forconstruction only for the remaining portion of the GeneralPermit cycle under which it was originally permitted (up to5-years) PLUS two additional permit cycles (10-years)unless: VSMP permit coverage lapses (failure to reapply) or Two additional permit cycles have passedIn that event, portions of the project not under constructionare required to meet any new technical criteria adoptedsince the original permit coverage was issued. 28
  29. 29. Example Time Limit on an Approved Plan A subdivision registers under the VSMP General Permit on July 12, 2013. The post-development criteria applicable to the subdivision remains applicable for the remaining portion of that permit cycle (until 2014) plus two additional permit cycles (2014-19, 2019-24). Any portions of the sub-division not under construction by July 1, 2024 must meet the post-development design criteria in the regulations at that time. 29
  30. 30. Resources Available in the New (Revisedand Updated) Virginia StormwaterManagement Handbook 30
  31. 31. Background• The existing Virginia SWM Handbook (nicknamed the “Blue Book”) was released in 1999.• Many new technologies, practices, and design techniques developed since then, but NOT reflected in the existing Handbook.• New Handbook reflects quantum leaps in research and in knowledge of how to do SWM well. 31
  32. 32. Handbook Organization• The Handbook organized in 3 Parts. – Part 1: Laws, Regulations and Program Implementation (Chapters 1-3) – Part 2: Understanding Stormwater Management (Chapters 4-7) – Part 3: Tools, Methods and Examples (Chapters 8-14)• Most chapters have multiple Appendices that provide specific guidance, useful tools, case studies, etc.• Handbook has many more helpful photos and graphics. 32
  33. 33. Virginia Stormwater BMP ClearinghouseDesign standards and specifications of BMPs approved foruse in Virginia to control the quality and/or quantity ofstormwater runoff. 33
  34. 34. Traditional Runoff Treatment BMPs 34
  35. 35. Runoff Volume Reduction/LID BMPs 35
  36. 36. Manufactured (Proprietary) BMPsClearinghouse website disseminates the results of Virginia’s process to evaluateand certify the performance claims of manufactured/proprietary BMPs using theVirginia Technology Assessment Protocol (VTAP) 36
  37. 37. LEED Credits for BMP Use• Site Reforestation: SS5.1, SS5.2, SS6.2; maybe SS7.1, WE1.1, WE1.2• Rooftop Disconnection: SS6.1, SS6.2; maybe WE1.1, WE1.2• Filter Strips: SS5.2, SS6.1, SS6.2; maybe WE1.1, WE1.2• Grass Channel: SS5.1, SS5.2, SS6.1, SS6.2• Vegetated Roofs: EA pre-1 & EA1; maybe SS5.1 and/or SS5.2 if get SS2; maybe SS6.1, SS6.2, SS7.1, WW7.2• Rainwater Harvesting: SS6.1, SS6.2, WE1.1 & WE1.2 or WE2 or WE3• Permeable Pavement: SS6.1, SS6.2; maybe SS5.1, SS7.1, WE credits, MR credits• Infiltration: SS6.1, SS6.2• Bioretention: SS5.1, SS5.2, SS6.1, SS6.2, WE1.1, WE1.2• Wet Swale/Wet Ponds: SS5.1; maybe SS5.2, SS6.1, SS6.2• Filtering Practices: SS6.2; maybe SS5.1, SS6.1• Constructed Wetlands: SS5.1; maybe SS5.2, SS6.1, SS6.2 KEY: SS = sustainable sites; WE = water efficient landscaping; EA = energy and atmosphere; MR = materials and resources 37
  38. 38. Additional Information Draft Stormwater Handbook http://www.dcr.virginia.gov/lr2i.shtml BMP Clearinghouse Website http://vwrrc.vt.edu/swc/ Runoff Reduction Methodology http://www.dcr.virginia.gov/lr2f.shtml Modified Regulations http://lis.virginia.gov/000/reg/TOC04050.HTM#C0060Stormwater Local Government Advisory Committee (SWLGAC) Information http://www.dcr.virginia.gov/lrswlgac01.shtml 38
  39. 39. RRM on DCR Website 39
  40. 40. 40
  41. 41. QUESTIONS? 41